OM4041 08/11 Lubrication and Service - Section 40 Page 40-13 STEERING CIRCUIT FILTER Removal The brake and steering circuit filter is located on the left frame rail, forward of the hydraulic tank. Relieve pressure before disconnecting hydraulic and other lines. Tighten all connections before applying pressure. Hydraulic fluid escaping under pressure can have sufficient force to enter a person's body by penetrating the skin and cause serious injury and possibly death if proper medical treatment by a physician familiar with this injury is not received immediately. 1. With the key switch OFF allow at least 90 sec- onds for the accumulators to bleed down.
Check the steering to ensure the system is bled down. 2. Remove plug (10, Figure 40-4) and drain oil from the housing into a suitable container. Avoid contact with hot oil if the truck has been operating. Avoid spillage and contamination! 3. Remove housing (8) and element (7). 4. Replace O-ring (4) and backup ring (5) in filter head. Installation 1. Install new element (7). Install housing (8) and tighten. 2. Replace drain plug (10), and O-ring (9). NOTE: The indicator switch (2, Figure 40-4) is preset to actuate at 241 kPa (35 psid) and is not repairable or adjustable. If the indicator switch is inoperative, replace the complete switch. Attempting to adjust the switch is not recommended.
FIGURE 40-4. STEERING CIRCUIT FILTER 1. Head 2. Indicator Switch 3. O-Ring 4. O-Ring 5. Backup Ring 6. Bypass Valve 7. Filter Element 8. Housing 9. O-Ring 10. Plug